<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
        <script src="./app.js"></script>
</head>
<body>
    <div class="btn-cs">Broadcast</div>
    <script>
        var client = new MyClient({
          notify: function(data) {
            console.log(data);
            alert(JSON.stringify(data));
          }
        });
      </script>
</body>
</html>